1 增加按钮、增打开文档提示

今天又来更新文档了，今天这个四视图中又增加了点东西，今天这篇是添上上篇的坑的。三个按钮终于实现了。在实现三个按钮的情况下，还给他增加了一个打开文件夹的提示，不过这英文用的好像是不咋对，凑乎看吧，如下图：

还记得在上上片文中中增加按钮失败那，哪里使用了QVTKOpenGLWidget，死活都没法实现，我个人感觉应该是因为布局的问题。这次再升级VTK9.0.3后，使用了QVTKOpenGLNativeWidget 实现了这个功能。

2 自定义模块"VTKRenderWidget"

这里我自己定义了模块VTKRenderWidget，包含一个QVTKOpenGLNativeWidget 和三个QPushbutton ，如下图所示

2.1 vtkrenderwidget.h

#ifndef VTKRENDERWIDGET_H
#define VTKRENDERWIDGET_H/***********Qt*******************/
#include <QWidget>
#include <QMouseEvent>
#include <QPainter>
#include <QPaintEvent>
#include <QPen>
#include <QColor>
#include <QMenu>
#include <QAction>
#include <QLabel>
#include <QResizeEvent>/***********VTK*******************/
#include "vtkRenderWindow.h"
#include "QVTKInteractor.h"
#include "myqvtkopenglnativewidget.h"namespace Ui {
class VTKRenderWidget;
}class VTKRenderWidget : public QWidget
{Q_OBJECTpublic:explicit VTKRenderWidget(QWidget *parent = nullptr);~VTKRenderWidget();/*** @brief set_BackGroundColor* 设置背景颜色 RGBA* @param r* @param g* @param b* @param a*/void set_BackGroundColor(int r=0,int g=0,int b = 0,int a = 255);void set_OpenFolderEnable(bool enable = false);//------------------------------------------------------------------------------------vtkRenderWindow* renderWindow() const;QVTKInteractor* interactor() const;void setRenderWindow(vtkGenericOpenGLRenderWindow* win);void setRenderWindow(vtkRenderWindow* win);
signals:void signal_mouseDoubleClicked();private:void paintEvent(QPaintEvent *event);void resizeEvent(QResizeEvent *event);private:Ui::VTKRenderWidget *ui;QColor m_BackGroundColor = QColor(255,255,0,255);           //背景颜色QLabel *m_OpenFolderText = nullptr;                         //打开文件夹提示QMenu *m_Menu_1 = nullptr;QAction *test = nullptr;QAction *test1 = nullptr;};#endif // VTKRENDERWIDGET_H

2.2 vtkrenderwidget.cpp

#include "vtkrenderwidget.h"
#include "ui_vtkrenderwidget.h"VTKRenderWidget::VTKRenderWidget(QWidget *parent) :QWidget(parent),ui(new Ui::VTKRenderWidget)
{ui->setupUi(this);connect(ui->openGLWidget,&MyQVTKOpenGLNativeWidget::signal_mouseDoubleClicked,this,[=](){emit signal_mouseDoubleClicked();});m_OpenFolderText = new QLabel(this);m_OpenFolderText->setText("Open Folder!");m_OpenFolderText->setStyleSheet("QLabel{color: rgb(136, 136, 136);}QLabel{font: 24pt '黑体';}");m_OpenFolderText->raise();m_Menu_1 = new QMenu(this);test = new QAction(m_Menu_1);test->setText("ABC");test->setCheckable(true);test1 = new QAction(m_Menu_1);test1->setText("EFG");test1->setCheckable(true);m_Menu_1->addAction(test);m_Menu_1->addAction(test1);ui->pushButton_1->setMenu(m_Menu_1);ui->pushButton_2->setMenu(m_Menu_1);ui->pushButton_3->setMenu(m_Menu_1);ui->pushButton_1->setStyleSheet("QPushButton::menu-indicator{image:none;}"      //不显示下拉图标"QPushButton{border-image:url(:/ImageManage/Images/ImageManage/btn_n_1.png);}""QPushButton:hover{border-image:url(:/ImageManage/Images/ImageManage/btn_p_1.png);}""QPushButton:pressed{border-image:url(:/ImageManage/Images/ImageManage/btn_n_1.png);}");ui->pushButton_2->setStyleSheet("QPushButton::menu-indicator{image:none;}"      //不显示下拉图标"QPushButton{border-image:url(:/ImageManage/Images/ImageManage/btn_n_2.png);}""QPushButton:hover{border-image:url(:/ImageManage/Images/ImageManage/btn_p_2.png);}""QPushButton:pressed{border-image:url(:/ImageManage/Images/ImageManage/btn_n_2.png);}");ui->pushButton_3->setStyleSheet("QPushButton::menu-indicator{image:none;}"      //不显示下拉图标"QPushButton{border-image:url(:/ImageManage/Images/ImageManage/btn_n_3.png);}""QPushButton:hover{border-image:url(:/ImageManage/Images/ImageManage/btn_p_3.png);}""QPushButton:pressed{border-image:url(:/ImageManage/Images/ImageManage/btn_n_3.png);}");}VTKRenderWidget::~VTKRenderWidget()
{delete ui;
}void VTKRenderWidget::set_BackGroundColor(int r, int g, int b, int a)
{m_BackGroundColor.setRgb(r,g,b,a);this->update();
}void VTKRenderWidget::set_OpenFolderEnable(bool enable)
{if(enable)m_OpenFolderText->show();elsem_OpenFolderText->hide();
}vtkRenderWindow *VTKRenderWidget::renderWindow() const
{if(ui->openGLWidget)return ui->openGLWidget->renderWindow();return nullptr;
}QVTKInteractor *VTKRenderWidget::interactor() const
{if(ui->openGLWidget)return ui->openGLWidget->interactor();elsereturn nullptr;
}void VTKRenderWidget::setRenderWindow(vtkGenericOpenGLRenderWindow *win)
{if(ui->openGLWidget)ui->openGLWidget->setRenderWindow(win);
}void VTKRenderWidget::setRenderWindow(vtkRenderWindow *win)
{if(ui->openGLWidget)ui->openGLWidget->setRenderWindow(win);
}void VTKRenderWidget::paintEvent(QPaintEvent *event)
{Q_UNUSED(event);QPainter p(this);p.setPen(Qt::NoPen);p.setBrush(m_BackGroundColor);p.drawRect(rect());
}void VTKRenderWidget::resizeEvent(QResizeEvent *event)
{Q_UNUSED(event)ui->openGLWidget->move(2,2);ui->openGLWidget->resize(this->width()-4,this->height()-4);ui->pushButton_1->move(this->width()-ui->pushButton_1->width()-7,7);ui->pushButton_2->move(this->width()-ui->pushButton_1->width()*2-12,7);ui->pushButton_3->move(this->width()-ui->pushButton_1->width()*3-17,7);m_OpenFolderText->move((this->width()-m_OpenFolderText->width())/2,(this->height()-m_OpenFolderText->height())/2);m_OpenFolderText->raise();
}

在我的这自定义模块中，还使用了自己定义的QVTKOpenGLNativeWidget名字为MyQVTKOpenGLNativeWidget.

3 重写模块“QVTKOpenGLNativeWidget”

其实目前来看，这个类和原生基础的QVTKOpenGLNativeWidget没有太多区别。目前只是增加了鼠标双击事件。

3.1 myqvtkopenglnativewidget.h

#ifndef MYQVTKOPENGLNATIVEWIDGET_H
#define MYQVTKOPENGLNATIVEWIDGET_H#include <QObject>
#include <QOpenGLWidget>
#include <QScopedPointer> // for QScopedPointer.
#include <QMouseEvent>
#include "QVTKInteractor.h"        // needed for QVTKInteractor
#include "vtkGUISupportQtModule.h" // for export macro
#include "vtkNew.h"                // needed for vtkNew
#include "vtkSmartPointer.h"       // needed for vtkSmartPointerclass QVTKInteractor;
class QVTKInteractorAdapter;
class QVTKRenderWindowAdapter;
class vtkGenericOpenGLRenderWindow;class MyQVTKOpenGLNativeWidget : public QOpenGLWidget
{Q_OBJECTtypedef QOpenGLWidget Superclass;
public:MyQVTKOpenGLNativeWidget(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());MyQVTKOpenGLNativeWidget(vtkGenericOpenGLRenderWindow* window, QWidget* parent = nullptr,Qt::WindowFlags f = Qt::WindowFlags());~MyQVTKOpenGLNativeWidget() override;void setRenderWindow(vtkGenericOpenGLRenderWindow* win);void setRenderWindow(vtkRenderWindow* win);vtkRenderWindow* renderWindow() const;QVTKInteractor* interactor() const;static QSurfaceFormat defaultFormat(bool stereo_capable = false);void setEnableHiDPI(bool enable);bool enableHiDPI() const { return this->EnableHiDPI; }void setUnscaledDPI(int dpi);int unscaledDPI() const { return this->UnscaledDPI; }void setDefaultCursor(const QCursor& cursor);const QCursor& defaultCursor() const { return this->DefaultCursor; }VTK_LEGACY(void SetRenderWindow(vtkGenericOpenGLRenderWindow* win));VTK_LEGACY(void SetRenderWindow(vtkRenderWindow* win));VTK_LEGACY(vtkRenderWindow* GetRenderWindow());VTK_LEGACY(QVTKInteractor* GetInteractor());VTK_LEGACY(QVTKInteractorAdapter* GetInteractorAdapter());VTK_LEGACY(void setQVTKCursor(const QCursor& cursor));VTK_LEGACY(void setDefaultQVTKCursor(const QCursor& cursor));signals:void signal_mouseDoubleClicked();protected slots:virtual void cleanupContext();void updateSize();protected:bool event(QEvent* evt) override;void initializeGL() override;void paintGL() override;void mouseDoubleClickEvent(QMouseEvent *event)override;protected:vtkSmartPointer<vtkGenericOpenGLRenderWindow> RenderWindow;QScopedPointer<QVTKRenderWindowAdapter> RenderWindowAdapter;
private:Q_DISABLE_COPY(MyQVTKOpenGLNativeWidget);bool EnableHiDPI;int UnscaledDPI;QCursor DefaultCursor;};#endif // MYQVTKOPENGLNATIVEWIDGET_H

3.2 myqvtkopenglnativewidget.cpp

#include "myqvtkopenglnativewidget.h"
#include <QApplication>
#include <QDesktopWidget>
#include <QOpenGLContext>
#include <QOpenGLFramebufferObject>
#include <QOpenGLFunctions>
#include <QOpenGLFunctions_3_2_Core>
#include <QOpenGLTexture>
#include <QPointer>
#include <QScopedValueRollback>
#include <QSize>
#include <QtDebug>#include "QVTKInteractor.h"
#include "QVTKInteractorAdapter.h"
#include "QVTKRenderWindowAdapter.h"
#include "vtkCommand.h"
#include "vtkGenericOpenGLRenderWindow.h"
#include "vtkInteractorStyleTrackballCamera.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkOpenGLState.h"MyQVTKOpenGLNativeWidget::MyQVTKOpenGLNativeWidget(QWidget* parentWdg, Qt::WindowFlags f) : MyQVTKOpenGLNativeWidget(vtkSmartPointer<vtkGenericOpenGLRenderWindow>::New().GetPointer(), parentWdg, f)
{}
MyQVTKOpenGLNativeWidget::MyQVTKOpenGLNativeWidget(vtkGenericOpenGLRenderWindow* renderWin, QWidget* parentWdg, Qt::WindowFlags f): Superclass(parentWdg, f), RenderWindow(nullptr), RenderWindowAdapter(nullptr), EnableHiDPI(true), UnscaledDPI(72), DefaultCursor(QCursor(Qt::ArrowCursor))
{this->setFocusPolicy(Qt::StrongFocus);this->setUpdateBehavior(QOpenGLWidget::NoPartialUpdate);this->setMouseTracking(true);this->connect(this, SIGNAL(resized()), SLOT(updateSize()));this->setRenderWindow(renderWin);this->grabGesture(Qt::PinchGesture);this->grabGesture(Qt::PanGesture);this->grabGesture(Qt::TapGesture);this->grabGesture(Qt::TapAndHoldGesture);this->grabGesture(Qt::SwipeGesture);}MyQVTKOpenGLNativeWidget::~MyQVTKOpenGLNativeWidget()
{this->makeCurrent();this->cleanupContext();
}
void MyQVTKOpenGLNativeWidget::setRenderWindow(vtkGenericOpenGLRenderWindow *win)
{if (this->RenderWindow == win){return;}if (this->RenderWindowAdapter){this->makeCurrent();this->RenderWindowAdapter.reset(nullptr);}this->RenderWindow = win;if (this->RenderWindow){this->RenderWindow->SetReadyForRendering(false);if (!this->RenderWindow->GetInteractor()){vtkNew<QVTKInteractor> iren;this->RenderWindow->SetInteractor(iren);iren->Initialize();vtkNew<vtkInteractorStyleTrackballCamera> style;iren->SetInteractorStyle(style);}if (this->isValid()){this->makeCurrent();this->initializeGL();this->updateSize();}}
}void MyQVTKOpenGLNativeWidget::setRenderWindow(vtkRenderWindow *win)
{auto gwin = vtkGenericOpenGLRenderWindow::SafeDownCast(win);if (win != nullptr && gwin == nullptr){qDebug() << "QVTKOpenGLNativeWidget requires a `vtkGenericOpenGLRenderWindow`. `"<< win->GetClassName() << "` is not supported.";}this->setRenderWindow(gwin);
}vtkRenderWindow *MyQVTKOpenGLNativeWidget::renderWindow() const
{return this->RenderWindow;
}QVTKInteractor *MyQVTKOpenGLNativeWidget::interactor() const
{return this->RenderWindow ? QVTKInteractor::SafeDownCast(this->RenderWindow->GetInteractor()) : nullptr;
}QSurfaceFormat MyQVTKOpenGLNativeWidget::defaultFormat(bool stereo_capable)
{return QVTKRenderWindowAdapter::defaultFormat(stereo_capable);
}void MyQVTKOpenGLNativeWidget::setEnableHiDPI(bool enable)
{this->EnableHiDPI = enable;if (this->RenderWindowAdapter){this->RenderWindowAdapter->setEnableHiDPI(enable);}
}void MyQVTKOpenGLNativeWidget::setUnscaledDPI(int dpi)
{this->UnscaledDPI = dpi;if (this->RenderWindowAdapter){this->RenderWindowAdapter->setUnscaledDPI(dpi);}
}void MyQVTKOpenGLNativeWidget::setDefaultCursor(const QCursor &cursor)
{this->DefaultCursor = cursor;if (this->RenderWindowAdapter){this->RenderWindowAdapter->setDefaultCursor(cursor);}
}void MyQVTKOpenGLNativeWidget::cleanupContext()
{this->RenderWindowAdapter.reset(nullptr);
}void MyQVTKOpenGLNativeWidget::updateSize()
{if (this->RenderWindowAdapter){this->RenderWindowAdapter->resize(this->width(), this->height());}
}bool MyQVTKOpenGLNativeWidget::event(QEvent *evt)
{if (this->RenderWindowAdapter){this->RenderWindowAdapter->handleEvent(evt);}return this->Superclass::event(evt);
}void MyQVTKOpenGLNativeWidget::initializeGL()
{this->Superclass::initializeGL();if (this->RenderWindow){Q_ASSERT(this->RenderWindowAdapter.data() == nullptr);this->RenderWindowAdapter.reset(new QVTKRenderWindowAdapter(this->context(), this->RenderWindow, this));this->RenderWindowAdapter->setDefaultCursor(this->defaultCursor());this->RenderWindowAdapter->setEnableHiDPI(this->EnableHiDPI);this->RenderWindowAdapter->setUnscaledDPI(this->UnscaledDPI);}this->connect(this->context(), SIGNAL(aboutToBeDestroyed()), SLOT(cleanupContext()),static_cast<Qt::ConnectionType>(Qt::UniqueConnection | Qt::DirectConnection));
}void MyQVTKOpenGLNativeWidget::paintGL()
{this->Superclass::paintGL();if (this->RenderWindow){Q_ASSERT(this->RenderWindowAdapter);this->RenderWindowAdapter->paint();this->makeCurrent();QOpenGLFunctions_3_2_Core* f = QOpenGLContext::currentContext()->versionFunctions<QOpenGLFunctions_3_2_Core>();if (f){const QSize deviceSize = this->size() * this->devicePixelRatioF();this->RenderWindowAdapter->blit(this->defaultFramebufferObject(), GL_COLOR_ATTACHMENT0, QRect(QPoint(0, 0), deviceSize));}}else{QOpenGLFunctions* f = QOpenGLContext::currentContext()->functions();f->glClearColor(1.0f, 1.0f, 1.0f, 1.0f);f->glClear(GL_COLOR_BUFFER_BIT);}
}void MyQVTKOpenGLNativeWidget::mouseDoubleClickEvent(QMouseEvent *event)
{Q_UNUSED(event);emit signal_mouseDoubleClicked();}//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
void MyQVTKOpenGLNativeWidget::SetRenderWindow(vtkRenderWindow* win)
{VTK_LEGACY_REPLACED_BODY(QVTKOpenGLNativeWidget::SetRenderWindow, "VTK 9.0", QVTKOpenGLNativeWidget::setRenderWindow);vtkGenericOpenGLRenderWindow* gwin = vtkGenericOpenGLRenderWindow::SafeDownCast(win);if (gwin == nullptr && win != nullptr){qDebug() << "QVTKOpenGLNativeWidget requires a `vtkGenericOpenGLRenderWindow`. `"<< win->GetClassName() << "` is not supported.";}this->setRenderWindow(gwin);
}
#endif//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
void MyQVTKOpenGLNativeWidget::SetRenderWindow(vtkGenericOpenGLRenderWindow* win)
{VTK_LEGACY_REPLACED_BODY(QVTKOpenGLNativeWidget::SetRenderWindow, "VTK 9.0", QVTKOpenGLNativeWidget::setRenderWindow);this->setRenderWindow(win);
}
#endif//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
vtkRenderWindow* MyQVTKOpenGLNativeWidget::GetRenderWindow()
{VTK_LEGACY_REPLACED_BODY(QVTKOpenGLNativeWidget::GetRenderWindow, "VTK 9.0", QVTKOpenGLNativeWidget::renderWindow);return this->renderWindow();
}
#endif//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
QVTKInteractorAdapter* MyQVTKOpenGLNativeWidget::GetInteractorAdapter()
{VTK_LEGACY_BODY(QVTKOpenGLNativeWidget::GetInteractorAdapter, "VTK 9.0");return nullptr;
}
#endif//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
QVTKInteractor* MyQVTKOpenGLNativeWidget::GetInteractor()
{VTK_LEGACY_REPLACED_BODY(QVTKOpenGLNativeWidget::GetInteractor, "VTK 9.0", QVTKOpenGLNativeWidget::interactor);return this->interactor();
}
#endif//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
void MyQVTKOpenGLNativeWidget::setQVTKCursor(const QCursor& cursor)
{VTK_LEGACY_REPLACED_BODY(QVTKOpenGLNativeWidget::setQVTKCursor, "VTK 9.0", QVTKOpenGLNativeWidget::setCursor);this->setCursor(cursor);
}
#endif//-----------------------------------------------------------------------------
#if !defined(VTK_LEGACY_REMOVE)
void MyQVTKOpenGLNativeWidget::setDefaultQVTKCursor(const QCursor& cursor)
{VTK_LEGACY_REPLACED_BODY(QVTKOpenGLNativeWidget::setDefaultQVTKCursor, "VTK 9.0",QVTKOpenGLNativeWidget::setDefaultCursor);this->setDefaultCursor(cursor);
}
#endif

☞ 源码

源码链接：https://github.com/DreamLife-Jianwei/Qt-Vtk

使用方法：☟☟☟

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